???? ?????? ?????? ???????? ????? ???? ???? ??? ?????, ???? ?? ????? ?? ??? ???? ????. ??? ??? ?? ???? ?? ??? ???? ?? ???? ???? ??? ????? ???. ??? 1: ??? ??? ???? ??? ? ???? ????? ????? ??? ???. ??? 2: ??? ??? ????? ? {??????? ??????? ?? ????, ?? ???? ???? ???? ???? ??? ???? ??? ???. ??? 3: ??? ??? ???? ???? ???? ? ???? ??????? ???